| 摘要 |
PROBLEM TO BE SOLVED: To ensure accuracy without working of a product; to reduce time for manufacture of the product by eliminating machine finishing; and to reduce costs. SOLUTION: The molding die is composed of an upper die which is equipped with a through-hole for inserting a molding, a lower die which is equipped with a part for holding an end surface of the molding, and a pin for being pressed into an inner peripheral part of the molding; the upper and lower dies are fitted together via mutual tapered surfaces; and the lower die is made of a material with a higher expansion coefficient than that of a material for the upper die. COPYRIGHT: (C)2005,JPO&NCIPI
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